[MD History] Move the shared menu from history list to list container.

chrome/test/data/webui/md_history/history_overflow_menu_test.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 cr.define('md_history.history_overflow_menu_test', function() {
   // Menu button event.
   var MENU_EVENT = {
     detail: {
       target: null
     }
   };
 
   var ADDITIONAL_MENU_EVENT = {
     detail: {
       target: null
     }
   };
 
   function registerTests() {
     suite('#overflow-menu', function() {
-      var element;
+      var listContainer;
+      var sharedMenu;
 
       suiteSetup(function() {
-        element = $('history-app').$['history'].$['infinite-list'];
+        listContainer = $('history-app').$['history'];
+        sharedMenu = listContainer.$.sharedMenu;
 
         var element1 = document.createElement('div');
         var element2 = document.createElement('div');
         document.body.appendChild(element1);
         document.body.appendChild(element2);
 
         MENU_EVENT.detail.target = element1;
         ADDITIONAL_MENU_EVENT.detail.target = element2;
       });
 
       test('opening and closing menu', function() {
-        element.toggleMenu_(MENU_EVENT);
-        assertEquals(true, element.$.sharedMenu.menuOpen);
-        assertEquals(MENU_EVENT.detail.target,
-                     element.$.sharedMenu.lastAnchor_);
+        listContainer.toggleMenu_(MENU_EVENT);
+        assertTrue(sharedMenu.menuOpen);
+        assertEquals(MENU_EVENT.detail.target, sharedMenu.lastAnchor_);
 
         // Test having the same menu event (pressing the same button) closes the
         // overflow menu.
-        element.toggleMenu_(MENU_EVENT);
-        assertEquals(false, element.$.sharedMenu.menuOpen);
+        listContainer.toggleMenu_(MENU_EVENT);
+        assertFalse(sharedMenu.menuOpen);
 
         // Test having consecutive distinct menu events moves the menu to the
         // new button.
-        element.toggleMenu_(MENU_EVENT);
-        element.toggleMenu_(ADDITIONAL_MENU_EVENT);
-        assertEquals(ADDITIONAL_MENU_EVENT.detail.target,
-                     element.$.sharedMenu.lastAnchor_);
-        assertEquals(true, element.$.sharedMenu.menuOpen);
-        element.toggleMenu_(MENU_EVENT);
-        assertEquals(true, element.$.sharedMenu.menuOpen);
-        assertEquals(MENU_EVENT.detail.target,
-                     element.$.sharedMenu.lastAnchor_);
+        listContainer.toggleMenu_(MENU_EVENT);
+        listContainer.toggleMenu_(ADDITIONAL_MENU_EVENT);
+        assertEquals(
+            ADDITIONAL_MENU_EVENT.detail.target, sharedMenu.lastAnchor_);
+        assertTrue(sharedMenu.menuOpen);
+        listContainer.toggleMenu_(MENU_EVENT);
+        assertTrue(sharedMenu.menuOpen);
+        assertEquals(MENU_EVENT.detail.target, sharedMenu.lastAnchor_);
 
-        element.$.sharedMenu.closeMenu();
-        assertEquals(false, element.$.sharedMenu.menuOpen);
-        assertEquals(MENU_EVENT.detail.target,
-                     element.$.sharedMenu.lastAnchor_);
+        sharedMenu.closeMenu();
+        assertFalse(sharedMenu.menuOpen);
+        assertEquals(MENU_EVENT.detail.target, sharedMenu.lastAnchor_);
       });
 
       teardown(function() {
-        element.$.sharedMenu.lastAnchor_ = null;
+        sharedMenu.lastAnchor_ = null;
       });
     });
   }
   return {
     registerTests: registerTests
   };
 });